400 error when create jira and how to debug the issue

[Lia]

Hi experts,

I'm using rest api to create new jira but getting 400 error. I have compared format with manually created jira(all mandatory fileds are provided) and fetched existing jirasd to confirm {} format but still cannot figure out what was wrong.
Anyone can help and also advice how to debug such issue?

Endpoint
Post to https://<endpoint>/rest/api/latest/issue

Content:

{
"fields": {
"assignee": {
"name": "email"
},
"customfield_10110": { //custom field for severity 10012 maps to severity 4
"id": "10012"
},
"description": "contest test",
"issuetype": {
"name": "Incident"
},
"labels": ["a","b"],
"project": {
"key": "project key"
},
"summary": "subject"
}
}

Error:

Issue could not be created. Status code 400 was returned with response data: {"errorMessages":["We can't create this issue for you right now, it could be due to unsupported content you've entered into one or more of the issue fields. If this situation persists, contact your administrator as they'll be able to access more specific information in the log file."],"errors":{}}

[Lia · Accepted solution]

Found issue. when there is special characters in description, it need to be handled